C01B 21/0835
Nitrogen trifluoride
Official title: {Nitrogen trifluoride}
C01B21/0835 (Nitrogen trifluoride) appears on 38 US grants and 37 published applications in this corpus.
Search patents in C01B- Granted patents
- 38
- Published applications
- 37
- Assignees
- 25
- Inventors
- 108
- Latest grant
- 21 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 4 |
| 2004 | 0 | 7 |
| 2005 | 1 | 3 |
| 2006 | 7 | 3 |
| 2007 | 0 | 3 |
| 2008 | 3 | 3 |
| 2009 | 2 | 3 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 3 |
| 2022 | 2 | 2 |
| 2023 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Electrode production method21 Nov 2023US 11,821,099 B2Kanto Denka Kogyo Co., Ltd.
- Process of fluorinating inorganic compounds by direct fluorination24 Oct 2023US 11,795,138 B2
- Process of fluorinating inorganic or organic compounds by direct fluorination20 Sep 2022US 11,447,446 B2
- Process for preparing fluorobenzene by direct fluorination1 Mar 2022US 11,261,144 B2
- Metal doped carbon based hard mask removal in semiconductor fabrication13 Jul 2021US 11,062,897 B2Lam Research Corporation
- Electrode production method29 Dec 2022US 2022/0411949 A1Kanto Denka Kogyo Co., Ltd.
- Process of Fluorinating Inorganic Compounds by Direct Fluorination5 May 2022US 2022/0135516 A1Fujian Yongjing Technology Co., Ltd
- Electrode and production method therefor, and production method for regenerated electrode20 May 2021US 2021/0147993 A1Kanto Denka Kogyo Co., Ltd.
- Process for Preparing Fluorobenzene by Direct Fluorination25 Feb 2021US 2021/0053895 A1Fujian Yongjing Technology Co., Ltd
- Process of Fluorinating Inorganic or Organic Compounds by Direct Fluorination25 Feb 2021US 2021/0053911 A1Fujian Yongjing Technology Co., Ltd
Most cited
By later US patents
- Method for purifying nitrogen trifluoride gas89US 4,933,158 AMitsui Toatsu Chemicals, Inc. · 1990
- Process of preparing nitrogen trifluoride by gas-solid reaction20US 4,543,242 ACentral Glass Company, Limited · 1985
- Preparation of nitrogen trifluoride19US 4,091,081 AAir Products and Chemicals, Inc. · 1978
- Method of refining nitrogen trifluoride gas18US 5,069,887 ACentral Glass Company, Limited · 1991
- Method of liquefying and condensing nitrogen trifluoride and a method of purifying nitrogen trifluoride16US 4,975,259 AMitsui Toatsu Chemicals, Inc. · 1990